Britannica AI Icon

Athenian calendar

ancient Greek chronology

Quick Summary

The Athenian calendar was one of several dating systems used in classical Greece. It aimed to reconcile the lunar year (approximately 354 days) with the solar year (approximately 365 days) by adding extra months roughly every eight years. Months, consisting of 29 or 30 days, began with the new moon. The Athenian year typically commenced with the first new moon after the summer solstice. Years were officially designated by the name of the chief magistrate, the archon, who held office for one year. This system, while functional for local use, often differed from the natural lunar cycle and was eventually superseded by other systems, though Greek cities sometimes retained their traditional calendars even after the introduction of the Julian calendar.1234

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.